Samsung SCX 4521F All-In-One Laser Printer "phone saying message expired trying" Questions

...saying low toner, doesn't want to print. Try these steps: 1. Press MENU # 1 9 3 4 in sequence rapidly. The LCD panel should now display TECH. 2. Press MENU, and then press ENTER. The LCD panel will ...

...phone w/Canon, and am getting a refurbished replacement sent to me today. Apparently, the warranty is 1 1/2 yrs. They first suggested a local repair shop (covered under warranty), but when I asked ...